Thread guide mechanism



Dec. 26, 1939. L, L VE" I 2,184,390

THREAD GUIDE MECHANISM I Filed Oot. 26, 1936 2 Sheets-Sheet 1 hum 3nventor iouu E. Lousrr (Ittomeg Dec. 26, 1939. LOVETT 2,184,390

THREAD GUIDE MECHANISM Filed Oct. 26, 1936 2 Sheets-Sheet 2 3nnentor Lou/s 51100577 (Ittorneg Patented Dec. 26, 1939 uNiTEo STATES PATENT OFFICE THREAD GUIDE MECHANISM Application October 26, 1936, Serial No. 107,513

9 Claims.

This invention relates to the winding of thread or the like upon a bobbin, spool or other collecting device, and, more particularly, to the traverse mechanism for guiding the thread or the like to such collecting device.

In conventional traverse mechanisms, the thread guide eye is carried by an arm attached to a rocker shaft and as a result the thread guide eye moves in an arcuate path. Because of such arcuate movement of the thread guide eye, the thread or the like is not laid upon the collecting device with a uniform spacing between turns. This arises from the fact that at the end portions of the stroke of the thread guide eye, it 00- cupies a position with respect to the horizontal axis of the collecting device different from the position which it assumes at the middle of its stroke. Accordingly, toward the end portions of the package of thread or the like built up on the 0 collecting device, the package will be very dense due to the fact that the turns of thread or the like are closer together than. at the central portion thereof. If, later, the package of thread or the like is subjected to washing or other processing treatment, the closely spaced turns at the end portions thereof will not be treated as thoroughly as those toward the central portion of the package.

The present invention has for one of its objects to compensate for the arcuate motion of the thread guide eye; so that the thread guide eye, by moving in a straight line, effects a uniform spacing of the turns of thread or the like upon the collecting device. The invention will be illustrated in connection with the collection upon a spinning spool of artificial silk thread produced by the viscose process of -manufacturing artificial silk thread, although it is obvious that the invention is equally capable of use in other similar processes, such, for example, as the cuprammonium, cellulose acetate and cellulose nitrate processes. The invention is, however, not to be understood to be limited to the manufacture of artificial silk thread, being in fact capable of employment in the collection upon a bobbin, spool or other collecting device of thread or the like generally.

Several of the numerous possible embodiments of the invention are illustrated in the accompanying drawings, in which Figure 1 is a front elevation of a portion of a spinning machine for the manufacture of viscose artificial silk thread in which a preferred embodiment of the invention is incorporated. Figure 2 is a section on an en- 55 Used scale on the line 2-2 of Figure 1, parts being broken away to show details of construction. Figure 3 is a section on the line 3-3 of Figure 2. Figure 4 is a section corresponding to Figure 3 with the parts in different relation to each other. Figure 5 is a section of a modification 5 of the invention, the section being taken on line 55 of Figure 6. Figure 6 is a section on the line 8-6 of Figure 5. Figure 7 is an end elevation of another modification of the invention with parts omitted. Figure 8 is a section on the line 8-8 10 of Figure 7. Figure 9 is a section of a further modification, the section being taken on line 9-9 of Figure 10. Figure 10 is a section on line ill-40 of Figure 9.

Referring first to Figures 1 to 4, thread II, II formed by regeneration of the cellulose content of viscose extruded from spinneret l2 into acid coagulating bath !3, is collected upon rotating spool I4 across the surface of which it is guided by traverse mechanism l5. This traverse mechg0 anism includes a thread guide eye I6 supported by and at a distance beneath rocker shaft l1. Rocker shaft 11 may be rotated in bearings l8 in opposite angular directions by any suitable means, such, for example, as the crank arm I9 25 and linkage 20. The thread guide eye It is formed at the lower end of a rod 2| which is slidably mounted within a tubular arm 22 depending from a fastening block 23 carried upon rocker shaft l1. Rod 2| is urged upward within the 30 tubular arm 22 by means of a spring 24 seated at one end on an internal bearing 25 and bearing at its other end against cross pin 26.

To cause thread guide eye It to move in a straight line in spite of its tendency to move in 35 an arcuate path due to its being carried by an oscillating-arm, means are provided to reciprocate rod 2| within the tubular arm 22 in timed relation to the oscillation of said arm. Such reciprocating means include a lever 21 fulcrumed 40 'upon a pin 28 and pivotally connected by pin 32 to rod 2 I. Pin 28 is carried by ears 28 projecting from the arm 22 on opposite sides of a slot 38 through the wall of said arm 22. Pin 32 is carried by an enlarged portion 33 of the rod 2| and extends through a slot 3| in link 21. Connected to the outer end of lever 21 through a universal block 34 is a link 35. Universal block 34 is carried upon and is slidable along a pin portion 38 of lever 21 and is pivotally connected by pins 3'! to a yoked portion of the link 35. Head 38 of pin portion 38 is spaced away from universal block 34 to permit free movement of such block.

The upper portion of link 35 is carried by and is pivotable about a pin 48 proiecting from frame Link 59 is enlarged and slotted at 64 to bear member 4| extending lengthwise of the machine. To permit a recessional movement of the traverse mechanismsuch as disclosed and claimed in copending application Serial No. 107,512, filed of even date herewith, pin 40 is elongated to enable movement of link 35 therealong. This link 35 is moved along pin 40 upon endwise movement of rocker shaft II by means of a plate 42 secured to carrier block 23 engaging at its lower end within a slot 43 of the link 35. In this manner, link 35 and arm 22 are maintained a fixed'distance apart, so that uniform operation is possible irrespective of whether shaft I1 is caused to move in an axial direction.

Due to the fact that the axis of rocker shaft l1 and the axis of pin 40 are spaced apart, upon rotary movement of the rocker shaft I! in either angular direction, link 35 will act upon the outer extremity of lever 21 to cause the lever to urge rod 2| downward within tubular arm 22 against the influence of spring 24. The changed angular relation between lever 21 and link 35 will be accommodated by the universal block 34. By properly spacing the axes of rocker shaft l1 and pin 40, rod 2| and thread guide eye l6 carried thereby will be moved downward a distance equal to the distance which the guide eye |6 would be carried upward if it were to move in its normal arcuate path, as a result of which action thread guide eye I6 will move in the straight dot-and-dash line shown in Figure 2. Inasmuch as thread guide eye |6 will have a straight line movement throughout the entire portion of its stroke, the thread laid thereby upon spool M will have a uniform spacing over the entire length of the spool In the embodiment of the invention illustrated in Figures and 6, the link and lever means of the preceding figures is replaced by a draw cord 44. One end of this cord is fastened to an arm 45 carried upon a pin 46. This pin 46 is squared to prevent rotational movement of the arm 45 but permits endwise movement of the arm 45 accommodate any desired recessional movement of the rocker shaft. From arm 45 the cord passes through a thread guide eye 41 projecting radially from the tubular arm 48, thence over a pulley 49 rotatably carried upon a pin 50 projecting from tubular arm 48. It is connected at its other end to a pin 5| projecting through slots 5| from a slide block 52 of the rod 53.

To urge the rod 53 upward within the tubular arm 52, a spring 54 is provided. This spring seats at its upper end against slide block 52 and at its lower end against a suitable internal abutment. In theoperation of this embodiment of the invention, as the rocker shaft rotates and the distance between arm 45 and pin 5| increases, the consequent pull upon the cord 44 causes a downward movement of the rod 53 against the influence of spring 54. In this manner is achieved the desired straight-line motion of the thread guide eye I 6 at the lower end of rod 53.

In the modification of Figures 7 and 8, the rod 5'! has a pin 58 projecting therefrom which extends through slots 58' and is acted upon by a upon the exterior of the rocker shaft I! and is positioned between the fastening block 56 and a sleeve 63 to guide the link in its movement. Upon tion of rocker shaft l'l rod 66 is moved upward and downward to cause straight-line motion of threadguide eye l6.

It will be understood that numerous modifications of the apparatus herein disclosed are possible without departing in any way from the spirit of the invention. As hereinabove indicated, any

of the mechanisms illustrated may be employed in conjunction with means providing gradual recessional movement of the thread guide eye away from the periphery of the package, although such means may, if desired, be omitted for purposes of simplicity. It is intended that the patent shall cover, by suitable expression in the appended claims, whatever features of patentable novelty reside in the invention.

What is claimed is:

1. An oscillating thread guide mechanism comprising an arm capable of oscillatory movement about a fixed axis; a carrier rod provided with a thread guide eye with respect to which carrier rod, said arm is telescopic, whereby said carrier rod is guided by said arm; and means for causing said arm and said carrier rod to telescope as said arm is oscillated.

2. An oscillating thread guide mechanism comprising a rocker shaft; an arm secured to and depending from said rocker shaft; a carrier rod mounted in operative relation to said arm, said carrier rod being provided with a thread guide eye; and means cooperating with said arm for sliding said carrier rod longitudinally thereof as said arm is oscillated.

3. An oscillating thread guide mechanism comprising a rocker shaft; an arm secured to and depending from said rocker shaft; a carrier rod slidable longitudinally of said arm, said rod being provided with a thread guide eye; and means including a lever fulcrumed upon said arm and acting upon said carrier rod for sliding said carrier rod longitudinally of said arm as said arm is oscillated by said rocker shaft.

4. An oscillating thread guide mechanism comprising a rocker shaft; an oscillatable arm depending from said rocker shaft; a carrier rod slidable longitudinally of said arm, said rod being provided with a thread guide eye; and means including a cam surface operatively associated with said carrier rod for sliding said rod longitudinally of said arm as said arm is oscillated by said rocker shaft.

5. An oscillating thread guide mechanism comprising a rocker shaft; an oscillatable arm depending from said rocker shaft; a carrier rod slidable longitudinally of said arm, said rod be.- ing provided with a thread guide eye; a support offset from the axis of said rocker shaft; and connecting means including a link pivotable about said support disposed between said support and said carrier rod for sliding said rod longitudinally of said arm as said arm is oscillated by said rocker shaft, said connecting means also comprising a lever fulcrumed upon said arm and pivoted at its ends to said carrier rod and to said link.

6. An oscillating thread guide mechanism comprising a rocker shaft; an oscillatable arm depending from said rocker shaft; a carrier rod slidable longitudinally of .said arm, said rod being provided with a thread guide eye; a support oiiset from said axis; and connecting means between said support and said carrier rod for variably positioning said rod longitudinally of said arm as said arm is oscillated by said rocker shaft, said connecting means including a draw cord secured at its ends to said carrier rod and to said support.

7. An oscillating thread guide mechanism comprising a rocker shaft; an arm thereon oscilrocker shaft. 4

8. An oscillating thread guide mechanism comprising a rocker shaft: an arm secured to and depending from said rocker shaft, said arm being oscillated by said rocker shaft in a direction transverse to the axis of said rocker shaft; a carrier rod provided with a thread guide eye with respect to which carrier rod said arm is telescopic; a cam surface disposed transversely with respect to the major axis of said arm; and a follower operatively associated with said carrier rod and cooperating with said cam surface to cause said rod and said arm to telescope as said arm is oscillated by said rocker shaft.

9. An oscillating thread guide mechanism comprising a shaft capable of oscillatory movement about its longitudinal axis; an arm secured to said shaft in such manner as to extend substantially radially therefrom; a rod mounted in operative relation to and reciprocable longitudinally of said arm, said rod carrying a thread guide eye; and means associated with said arm for reciprocating said rod with respect to said arm as said shaft is actuated.

LOUIS E. IOVE'I'I'.

I CERTIFICATE OF CORRECTION. Patent No. 2,1sh, 9o. December 26, 19 9.

' LOUIS E. LOVETT.

It is hereb; certified that error appears in the printed specification of the above numbered patent requiring correction as folldws: Page 2, first column, line 142, for "of the am 145' read" therealong to; page 2, second column, line 32 claim 1, after "rod" strike out the comma; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 50th day of January, A; D. 1910.

. Henry Van Arsdale, (Seal) Acting Comissioner of Patents. 

